How To Fix CN266 - Network & is locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 266

• Message text: Network & is locked

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN266 - Network & is locked ?

  The SAP error message CN266, which states "Network & is locked," typically occurs in the context of project management or network planning within the SAP system, particularly in the Project System (PS) module. This error indicates that the network you are trying to access or modify is currently locked, preventing any changes or updates.
  Causes:
  
  User Lock: The network may be locked by another user who is currently editing or processing it.
  System Lock: The network could be locked due to a system process or transaction that is currently being executed.
  Transaction Lock: If a transaction is being processed that involves the network, it may be locked until the transaction is completed.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to unlock or modify the network.
  
  Solutions:
  
  Check for Active Sessions: Verify if another user is currently working on the network. You can use transaction code SM12 to check for locks and see if another user has locked the network.
  Wait for Completion: If the network is locked due to a system process, you may need to wait until the process is completed.
  Unlock the Network: If you have the necessary authorizations, you can unlock the network using transaction code SM12. Be cautious when doing this, as it may disrupt another user's work.
  Contact Administrator: If you are unable to resolve the issue, contact your SAP system administrator for assistance. They can help identify the cause of the lock and take appropriate action.
  Check Authorizations: Ensure that you have the necessary authorizations to access and modify the network. If not, request the required permissions from your SAP security team.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN22 (Change Network), CN41 (Display Network), and SM12 (Display and Delete Locks).
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message CN266.
  Documentation: Review SAP documentation related to Project System (PS) for more insights on network management and locking mechanisms.
  
  By following these steps, you should be able to diagnose and resolve the CN266 error effectively.